NUCLEAR ISOTOPES AND MAGIC NUMBERS

Анотація

In addition to the formulas (1) and (2) from work of the author (Bezdenezhnyi, 1999, hereafter Paper I) alternative formulas (3)--(6) are derived for description of two sequences of magic numbers. Their properties are described. Dependences of some physical parameters as a function of the number of chemical element (Z), number of neutrons (N) and the mass number (A) are analyzed. It is shown that magic numbers of protons (Z) and neutrons (N) are displayed in them. The concept of magic mass numbers (A) is proposed, and it is shown that they are also present in some dependences. The list of magic and twice magic (on Z and N) elements is extended, as well as the list of twice magic ones on A and Z or N. We propose to refer a nucleus that contains magic numbers of protons and neutrons to thrice magic nucleus if their sum is a magic number too. It is suggested that during the decay of "double-uranium" super-nucleus one of three twice magic elements ( X(112,168), Y(126,184) and Z(168,258) or Z'(168,240) ) predicted (in Paper I) will be formed fragment accompanying in areas of twice magic nuclei: Yb(70,112), Sn(50,70) and S(16,16) respectively.